Marin is charged with second-degree murder and manslaughter in connection with Brielle's November 2014 death.

Emery said Marin told her that the girl was delayed and would never crawl or walk, so she was surprised when she saw Brielle do both.

Marin's sister and aunt also testified that Marin insulted the girl, picking on everything from the way she looked to her hair.

"I said, 'You can't say things like that, and you need to say something nice about her,'" said Christina Dean, Marin's sister. "And she just looked at me and couldn't and didn't say anything at all."

The defense is claiming that Marin's fiance, Michael Rivera, was responsible for Brielle's death. Defense attorneys said that Rivera had a short temper, and the other women weren't there enough to really know how Marin acted around the girl.

But the relatives disagreed, saying that Brielle seemed to take to Rivera.

A video of police interviewing Marin was played in court Tuesday, and it showed Marin doubling over and crying for at least 15 minutes after she was told that her daughter had died. She also asked if she was going to be arrested.

Rivera is expected to take the stand during the trial. Prosecutors said he witnessed the attack that led to Brielle's death.

Marin opted for a bench trial, so a judge, instead of a jury, will determine the verdict.